淤泥絮凝脱水试验研究及水铰链假说的提出

王党伟; 杨国录

引用本文:	王党伟,杨国录.淤泥絮凝脱水试验研究及水铰链假说的提出[J].水利水运工程学报,2011,(4):

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淤泥絮凝脱水试验研究及水铰链假说的提出
王党伟¹,杨国录²
1. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京,100048 2. 武汉大学污淤泥研究中心,湖北武汉,430072

摘要:

针对江河湖泊清淤产生的高含水率淤泥的絮凝脱水问题进行了试验研究,试验结果表明:絮凝剂加入比例与淤泥初始含水量之间存在一定的联系,初始含水量越高,絮凝剂加入比例的下临界值越低,且两者之间呈非线性关系.据此试验现象和结果,并在已有研究的基础上提出了水铰链假说,阐述了淤泥颗粒的结合过程和原理,解析了淤泥在高含水率下仍保持稳定的原因,通过水铰链密度解释了淤泥难以自然脱水的原因以及采用絮凝剂时淤泥含水率和絮凝剂下临界的关系,进一步说明了淤泥颗粒在絮凝过程中絮团的形成过程.

关键词: 絮凝剂水铰链淤泥脱水

DOI：

分类号:TV141

基金项目:水利部公益性行业专项(200901014); 中国水利水电科学研究院科研专项经费(泥集1130)

Research on hydrogel chain theory in sullage dehydrating by flocculating

WANG Dang-wei¹,YANG Guo-lu²

WANG Dang-wei1,YANG Guo-lu2(1.State Key Laboratary of Simulation and Regulation of River Basin Water Cycle,China Institute of Water Resources and Hydropower Research,Beijing 100038,China,2.Sewage Sludge & Silt Research Center,Wuhan University,Wuhan 430072,China)

Abstract:

Aiming at the flocculation and dehydration of sullage in high moisture content,an experiment is executed and it is found that the proportion of flocculant added into the sullage is related to moisture content of the sullage and the least proportion of flocculant decreases when the water content of the sullage gets higher and they are in non-linear inverse proportion.According to the results of the experiment,a new theory named water molecule chain is proposed based on the existing studies.By this theory the...

Key words: sludge hydrogel chain dehydration